roller bumper
辊式保险杠
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The invention relates to a roller type of vehicle bumper. The roller type of vehicle bumper is simple in structure, has good safety performance and is applicable to various vehicles.
一种滚轮式汽车保险杠，它结构简单，安全性好，适合各种汽车上安装。
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